INSTRUCTIONS

ZOOM IN by clicking on the page. A slider will appear, allowing you to adjust your zoom level. Return to the original size by clicking on the page again.

MOVE the page around when zoomed in by dragging it.

ADJUST the zoom using the slider on the top right.

ZOOM OUT by clicking on the zoomed-in page.

SEARCH by entering text in the search field and click on "In This Issue" or "All Issues" to search the current issue or the archive of back issues
respectively.

PRINT by clicking on thumbnails to select pages, and then press the
print button.

SHARE this publication and page.

ROTATE PAGE allows you to turn pages 90 degrees clockwise or counterclockwise. Click on the page to return to the original orientation. To zoom in on a rotated page, return the page to its original orientation, zoom in, and
then rotate it again.

CONTENTS displays a table of sections with thumbnails and descriptions.

ALL PAGES displays thumbnails of every page in the issue. Click on
a page to jump.

BROWSE ISSUES allows you to browse through every available issue.

A FREE APP allows you to download issues to your mobile device for offline viewing. Get the Model Railroader Archive app in the iTunes and Google Play stores.

Radiatorgrill _..... -T ..042-r-t.i•#*--*.-..£-Ill. 1 Anticlimber .-7- 521. . "'j- ti' e .. -, .. •/,alli-yl•bell/iiii•··1.:036P.1 -- '-2-,-Zitilm=Yw,/4-5,- ' CabI vent (left side only) Cut lever MU hose retainer Fig. 7 BODY DETAILING 10 ron I Cab roof extension (both sides) X t Ft . lilI. le \'Lic _L--»_ Fi lsi P X 1 |--28"- 1 - Trim DD40 grills to make three-piece GP50 grills for each side 0,-0" .040" styrene stopcemented to wood block 0. r777775•I i <771 file toward stop 4 File-Swarf appears as you When swarf disappears, part is same height as stop Fig. 7a RADIATOR GRILLS . Part to be thinned -·*-28"-1 X = nonlouvered areas Fig. 8 RIGHT·SIDE DETAILS Newdoor .--0. :ilid:'Illit'34;1111!2: : ... ..042 ...... . -1 .... ,• \ '1.1:. , ... c · irm)<i...#a,5-3 ''' ..#- .. fl i ...tr i ly: : i-flit':Adz/44&4 10<01*14 , i .'»...=.*,1*./. f Fuelgauge Air filters .. ....).f.;t.,9%jili,0/.& Steps which I replaced with one from Precision Scale Co. (PSC) before painting. Make a winterization hatch as shown in fig. 9b if you're modeling the C&NW 50. You can see in fig. 9a how I carved the tops of the fan shrouds down to grill level, as specified in fig. 1. This makes them more like the prototype fans and also lets the hatch fit. As fig. 9a shows I left the winterization hatch loose un- til after I had painted the model. Install DA lifting eyes and the V.shaped handhold at the rear. Slice the rear sand filler cover off the SD45 body and cement as shown. Install the DA antenna later, after painting, as it is quite delicate. The C&NW prototype also carries a rotary beacon on its cab roof, and I modeled this by drilling the roof to take a yellow LED which I installed from inside after painting. Install the DA flat-top dynamic brake fan, the one without the center boss. PSC now has plastic dynamic brake and radiator fans with see-through grills, nos. 3932 and 3964, that I'd use if I built another GP50. The brake vent is from DW set no. 161, which also includes the electrical cabinet filter. Exhaust grill .> C . -.:1%. k:362_88 Umi 2 • *17-----1 Winterization hatch 9*9 - --Ar-- .7-- ,-•36•.-f•.: ,ia--'.- 221 i-· -- - - 7 LF kn#A 499 __t - ---- 036-_--_,=,-'4=>r fan 08*n. --2,71*-)*A -*t ••• ••• ••- - Brake 1 Brake vent Fig. 98 Roof DETAILS . . . C 11 :..1 :. :; 1.!.1...70 Fal •_At' CLTI :.12. ••':T9*3.U Vent UNDERFRAME Figure 10 shows where to saw the GP35 underframe in two, and how to stretch it 24" with brass splice bars. First secure the bars to one end of the frame with flathead 2-56 screws countersunk into the walls and tapped into the brass. Keep the splice bars tight to the floor inside the tank recess. Position the other end so the tank is 17 feet long and the wheel. base is 34 feet. Drill and tap the splice bars and screw the lengthened frame back together. Epoxy wood blocks in place to fill the spaces and the holes under the mounting lugs. When you reassemble the mechanism use no. 34025 splines and no. 90105 couplings, each shortened by 1/a", to fit the longer wheelbase. I had a hard time smoothing the end grain on the spacers. For a better finish, keep the spacers undersize where end grain shows, and fill these areas with epoxy before filing and sanding to sizb. Now that the tank is 17 feet long, 6" must be added to each end to make a GP50 tank; 1/16" brass will do this nicely. Scribe the shape, cut and file to size, and epoxy.one extension to each end of the tank. Add the tank details as in fig. 11- the fuel fillers are DW parts. The sight glasses go on both sides, but only the ·right side gets a fuel gauge. You can see the gauge installed in fig. 8. Make the overflow pipe of.040" soft copper wire, with shim brass brackets soldered to the tank extension. Set the frame in the body and mark all the.places where metal interferes with plastic. Spot these with white paint so you can easily find and grind off these points. COUPLERS AND TRUCKS Cement three layers of styrene measuring %" x 1/4" underneath each pilot floor between the inner braces, as you see in fig. 12a. Scrape out the top of the coupler slot until it's level with the third styrene layer, then add one more layer extending to fit flush with the face of the pilot. Fit a 7/16" X 3/8" brass plate into the opening below the styrene. Locate a Kadee no. 5 coupler so its pushing face is at least 1/32" past the anticlimber to clear a coupled unit or car. Mark the center hole on the brass, then remove the plate and drill a no. 43 hole to clear a no. 2 screw. Replace the plate and drill a no, 50 hole in the styrene. Stop drilling when the chips turn black-you don't want to drill through the platforms. Tap 2-56 for the coupler s•rews. Grind the coupler mounts on the frame as in fig. 12b. Drill a no. 43 hole in each, then place the frame in the body and center it end Sand filter ;,3 i. -': - 4£54.* .1- •- - 1 -1 .010' •• . -- styrene • >\ -\'/ • 48" 1 Cut screen to fit snugly. press up against cover Insert from bottom, and ,Round top edges < after assembly is dry 1 11 . I -- 50->< t.050" styrene • 5'-0" -«\«/7'-3" Fig. 9b WINTERIZATION HATCH MODEL RAILROADER / ASSEMBLED HATCH